Table 5

Pneumothorax according to exposure (BHD) and other potential risk variables (univariate analyses)

VariablenPneumothorax n (%)OR (95% CI)aLR χ P
BHDb22326 (11.7)
 Not affected with BHD1121 (0.9)1
 Affected with BHD11125 (22.5)32.3 (4.3–243)0.0001
BHDc22326 (11.7)
 Not affected with BHD1255 (4.0)1
 Affected with BHD9821 (21.4)6.5 (2.4–18.1)0.0001
Aged22124 (10.9)
 40-yr and Younger10218 (17.6)1
 Over 40 yr old1196 (5.0)0.2 (0.1–0.6)0.0023
Sex22326 (11.7)
 Female10814 (13.0)1
 Male11512 (10.4)0.8 (0.3–1.8)0.56
Smoker22126 (11.7)
 No14616 (11.0)1
 Yese7510 (13.3)1.2 (0.5–2.9)0.61
History of hypertension22026 (11.7)
 No17720 (11.3)1
 Yes436 (14.0)1.3 (0.5–3.4)0.63
BMI22226 (11.7)
 Low (<23.85)668 (11.5)1
 High (>23.85)15618 (12.1)0.9 (0.4–2.3)0.90
Site22326 (11.7)
 Seen on field trip1009 (9.0)1
 Seen at NIH12317 (13.8)1.6 (0.7–3.8)0.26
  • a CI, confidence interval; LR, likelihood ratio.

  • b Carriers of BHD included as affected with BHD.

  • c Carriers of BHD not included as affected with BHD.

  • d Age at diagnosis for patients with pneumothorax.

  • e Includes smokers and former smokers.